Collapsible extension top and bottom box



May 13, 1930. R. A. GROSS COLLAPSIBLE EXTENSION TOP AND BOTTOM BOX FiledMay 24, 1928 2 Sheets-Sheet l 3b 5a a INVENTOR Q g W ATTORNEY May 13,1930. A. GROSS COLLAPSIBLE EXTENSION TOP AND BOTTOM BOX Filed May 24,1928 2 Sheets-Sheet 2 /f/ 13% um Q MQ G l VENTOR Patented May 13, 1930mm: A. eaoss,

UNJTED STATES PATENT OFFICE COMPANY, OF LITITZ,

OF LITITZ, PENNSYLVANIA, ASSIGNOB '10 SIMPLEX PAPER BOX PENNSYLVANIA, ACORPORATION OF PENNSYLVANIA COLLAPSIBLE EXTENSION TOP AND BOTTOM BOXApplication filed May 24,

My invention consists in the novel features hereinafter described,reference being had to the accompanying drawings which illustrate oneembodiment of the same, and a slight modification thereof, selected byme for purposes of illustration, and the said invention is fullydisclosed in the following description and claims.

My invention consists in a knock-down folding box of the kind in whichthe top and bottom sections of the box are provided with portions ofgreater length and width than the interior of the box when in contentsreceiving condition, forming an outwardly extending portion projectingbeyond the sides and ends of the box, and forming what is known in thetrade as an extension top and bottom box. Such boxes are usually made upin permanent form, the exterior portions being decorated or covered withdecorated paper, and the top portion is frequently padded, and thecompleted boxes therefore occupy a very considerable space intransportation, and in storage. The object of my a present invention isto construct a box of this character WhlCh can be very lnexpenslvelyproduced as a knockdown box capable of being shaped flat and stored inthat condition, thus occupying a minimum amount of space, and which canbe instantly folded into and locked in its contents receiving conditionwhen it is desired to use it for the delivery of candy, or any othermerchandise for which it may be found to be desirable. A salient featureof my invention consists in the formation of the extension portions ofthe top and bottom sections of the box separate therefrom and united tothe central portion of a folding or knockdown box blank, therebygradually simplifying the manufacture of these boxes and cheapening thecost of the same, without impairing the appearance of the box, andgreatly increasing the stability and sturdiness of the box structure.

This construction also facilitates the decoration of the exterior of thebox, .-permitting portions of the decorative scheme to be printeddirectly upon exterior portions of the folding blank in generalconformity to the decorations on the cover paper 1928. Serial No.280,177.

secured upon the extension top, for example, and by properly matchingthe color scheme of the decorations printed on the folding blankportions with which the boxes may be' produced in large quantities, andalso facilitatmg the application of the necessary printed matter toindicate the contents of the box and the original thereof.

In the accompanying drawings,

Flg. 1 is a perspective view of a complete, fully telescopic box havingextension top and bottom, constructed in accordance with and embodyingmy present invention.

F 1g. 2 is a bottom plan View of the extension top section. I

Fig. 3 is a section on the line 3-3 of Fig. 2, showing the extensiontop,cover paper,

and intervening padding.

Fig. 4 is a plan view of a folding box blank which I conveniently employin connection with the extension top (or bottom).

Fig. 5 is a plan view showing the upper box section in knock-downcondition for shipment, and comprising the folding blank and separatelyformed extension top section.

Fig. 6 represents a sectional view on line 66 of Fig. 5.

Fig. 7 is a partial view similar to Fig. 6, showing the correspondingbottom box section, the inner edges of the side folds being providedwith lace paper flaps.

Fig. 8 is a similar section, showing the parts illustrated in Fig. 7 inthe contents receiving position.

- Fig. 9 is a perspective view of the top and bottom sections of the boxin separated relation.

Fi 10 is a partial, sectional .view of a slight modificationillustrating the application of my invention to 'a partial telescopicbox.

The body portion of the top, bottom section of the box, is 0 blankproperly scored and capable of being partially folded and glued wherenecessary,

and also the rmed from a to prepare it in the knockdown condition. Iprefer to use a blank of the kind illustrated 1n my former applicationfor Letters Patent of the United States, Serial No. 146,079, filedNovember 4th, 1926, and Serial No. 224,859, filed October 8th, 1927,either of which is admirably adapted for the purpose, and in thisinstance I have shown, in Fig. 4, a box blank of the kind'illustrated inmy last mentioned prior application. This blank is formed of suitablecard-board, paste-board, or other sheet material which can be creasedand bent or folded, which is cut by suitable dies or otherwise, andscored or creased, as shown in Fig. 4. The blank comprises, preferablyin one piece, a rectangular central body portion, 1, having main sideflaps, 2, 2, at opposite sides thereof, separated therefrom by creasesor lines of fold, 2, the side flaps being rovided with auxiliary orreinforcing side aps, 3, 3, separated from the side fla s, 2, by creasesor lines of fold, 3 The rein orcing or auxiliary side flaps, 3, are ofsubstantially the same width as the sideflaps, 2, and are provided attheir outer edges with body engaging flaps, 3 separated from the flaps,3, by creases or folds, 3, and provided at opposite ends with miteredportions, indicated at 3*, which I term the bottom locking portions. Thereinforcing flaps 3 are also slightly cut away at each end, as indicatedat 3", to form side locking portions, as hereinafter described. At eachend of the body portion 1, is an end flap, 4, separated therefrom by acrease or line of fold, 4 and being of the same height as the side flap,2, and beyond each end flap is a reinforcing flap, 5, separatedtherefrom by a crease, 5*. Each of the reinforcing end flaps, 5, is ofthe same height as the adjacent end flap, 4, and is provided at itsouter edge with a bottom engaging locking flap, 5 separated therefrom bycrease, 5,and provided at its opposite end with mitered lockingportions, 5, for engaging the locking shoulders, 3 as hereinafterdescribed. Each of the side flaps, 2, is connected with the end fia s bycorner sections, indicated at 6, divided y a diagonal crease, 6*, intotwo flaps, 7 and 8. The locking flaps, 5, are also provided at each endwith looking projections, 9, adapted to interlock with the cut-awayportions, 3, of the auxiliary side flaps, 3. It will be understood thatthe auxiliary side flaps, 3, are folded over upon and adhesively securedadjacent to the side flaps, 2, which will bring the flaps, 3", upon thebody portion, 1, as indicated in dotted lines, in Fig. 4, and saidflaps, 3", are adhesively secured to the body, 1. I have indicated byshading in Fig. 4, that the inner faces of the flaps, 3 and 3 are to begummed, but obviously the parts could be secured together in any otherdesired way. The corner sections, 7 are also adhesively secured to theadjacent end flap, 4, as indicated in dotted lines in Fig. 4, and I haveshown said fla s, 7, shaded to indicate adhesive material t ereon,althou h it is to be understood that they may be ot erwise secured.

In Figs. 2 and 3 I have shown the extension top, for example, of thebox, which comprises in this instance, a rectangular piece of cardboard,indicated at 10, which in this instance is provided with a similarlyshaped sheet of padding, 11, of any suitable material, held 1n place byan exterior cover, 12, of paper, the marginal portions, 12 of which arepasted upon the inner face of the card-board, 10. The paper cover, 12,is decorated with any desired design, and the paper sections for theseextension tops may be printed in any desired manner to indicate thecontents of the box, and the origin thereof.

The outer faces of the side flaps, 2, and

reinforcing side flaps, 3, and of the end flaps, 4, and locking flaps,5, are preferably printed in a decoration, as indicated, for example, inFig. '9, which harmonizes "with the color scheme and decorations used onthe cover paper, 12, for the extension top, so that when the blank is infolded position, as shown in Fig. 9, the exterior of the lateralportions formed by the side flaps 3, and end flaps, 4, as well as theinterior faces thereof, will present a decorated and harmoniousappearance with respect to the covering for the extension top. It is notnecessary to print decorations on the blanks except on the side and endflaps, 2 and 4, and I prefer to include the decoration of the infoldedreinforcing side flaps, 3, and locking flaps, 5, as it produces a morepleasing appearance when the top is removed from the lower portion ofthe box, and at practically no additional expense as it can all beaccomplished by a single printing. It will be understood, of course,that the decoration of the side and end flaps of the folding blank maybe accomplished by covering or adhesively attaching decorated paperportions instead of printing these portions of the blank, but obviouslythe printing thereof is much cheaper, and in practice it is found to beequally satisfactory from the standpoint of appearance.

The blanks for the folding box portion, for the top of the box, formedas shown in Fig. 4, will be folded and glued up so as to occupy theposition indicated in Fig. 5, that is to say, the reinforcing sideflaps, 3, will be adhesively secured to the side flaps, 2, and the bodyengaging side flaps, 3", will be adhesive- 1y secured to the body, 1,and the united side flaps, 2 and 3, will be folded over upon the body,1, and the corner flaps, 7, will be secured to the end flaps, 4, leavingthe blank in a very flat and compact form. The folded blank is thenadhesively secured to the bottom of the extension top portion, 10,indicated in Figs. 2 and 3, so that the latter shall proectsubstantially equally beyond all of the edges of the body, 1, of thefolding blank, as clearly indicated in Fig. 5. The upper member of theextension top and bottom box is then in condition for shipment.

Where the box is deslgned to be a truly telescopic box, that is to say,one in which the upper section telescopes over the side portions of thelower section, the'lower box member is formed in exactly the same manneras the upper box, except in the following particulars. As the lower boxsection is practically concealed except forv the extension bottomportion, indicated at 110 in Fig. 9, it is usually deemed unnecessary toprovide any decoration for the extension bottom, or for the lateralportions'of the box, indicated at 102 and 104, in Fig. 9. The box blanktherefore need not be printed at all, and will be made up in exactly thesame manner as that previously described with reference to Figs. 4 and5, except that its dimensions will be sufficiently smaller than those ofthe corresponding part of the box top section, as to enable it to fitneatly and telescopically within the same. The extension bottom, 110, isformed of a piece of card-board of substantially the same size as thatused in the extension, top, and is preferably covered with a papercover, indicated at 112, which may be plain white or glazed paper, or itmay be a decorated paper to conform with the sides and top, if desired.I also prefer to provide the usual lace-paper flaps, indicated at 113,which may be adhesively applied to the inner faces of the infoldedreinforcing side pieces, 103, as shown in Fig. 7, which illustrates theknockdown position of the folded plank, and also in Fig. 8, whichillustrates the contents receiving position of the same.

It will be understood that the bottom box section will also be made upand folded and glued in-the manner illustrated in Fig. 5, so that theentire box can be readily shipped flat and kept in that condition untilit is desired 0 use the same. When it is desired to use th box, eachsection canbe quickly placed in contents receiving condition, by simplybending up the end portions 4, (see Fig. 5) which, through the connectedcorner flaps, 7, 8, will raise the side'flaps, 2, 3, into verticalposition and by bending the locking flaps, 5, over upon the end flaps,4, which can be readily and simultaneously accomplished by the operatorsthumbs, the side locking portions, as, 9, Figs. 4 and 5, will beinterlocked with the cutaway portions, 3, of the auxiliary side flaps,and the bottom engaging locking flaps, 5", will be brought into positionto cause their mitered locking edges, 5, to engage the mitered lockingedges. 3, of the flaps, 3", as

clearly illustrated in Fig. 9 in the upper por-- tion thereof, thusconstituting a double lock for the end flaps, and securing the boxrigidly in the contents receiving condition.

' cated at opposite ends with the two hands, and simply raising the endfolds to vertical position and folding in the locking flaps with thethumbs. This feature is broadly covered in my former application SerialNumber 146,079, and the specific form of the folding blank portion iscovered by my former applications hereinbefore mentioned, and thesefeatures are not herein claimed except in connection with the extensiontop and bottom type of box.

It is also to be understood that my invention is applicable to anextension top box of the partially telescopic type, such as isillustrated in section, for example, in Fig. 10. In this instance thetop and bottom sections of the box, indicated generally at A and B, inthis figure, will be constructed exactl as previously described withreference to igs. 1 to 6, and will both be made according to the sameidentical dimensions. In this case the outer surface of the box members,A and B, will be decorated, that is to say, the side and end flapsthereof, but it will not be necessary to decorate the extension bottomportion of the box member, B. In assembling the parts of this type ofbox, the box members, A and B, which will be kept in the fiat foldedform, will be brought into contents receiving position in the samemanner as previously described and a rectangular cover, indiwill beplaced within the bottom box member, B, and will be of a widthsufiicient to extend above the side portions of the box member, B, sothat the side portions of the box members, A, may be telescoped thereon,in a well known way.

Aspreviously stated, my present invention provides an extension boxwhich can be made up in the knockdown form very cheaply, and

may be shipped flat and kept in the flat condition until the moment ofuse. As the bottom portions are usually not decorated at all, they mightbe made up in large quantities in advance of orders'and with greateconomy, and used in connection with the top members, which may bedecorated to order to suit the tastes of diflerent customers, as todesign, lettering, etc., and merely by printing the covers, 12, for thebox tops, in the particular design and letter required, which may be oneof many designs in harmony with the color scheme used in the decorationsof the side portions of the top section of the box. Moreover, thefolding blank portions of the top sections of the box may be made upinto the knockdown condition in great quantities, if desired, and heldsubject to orders to fill which it will only be necessary to rint thecovers for the extension top, apply t e covers thereto, and attach thecovers to the folding blan-kportions of the upper sections of the 5boxes. This construction, therefore, enables the box manufacturer toproduce these boxes with great economy and at the same time carry outthe special decorations desired by individual customers;

What I claim and desire to secure by Letters'Patent is 1. :As a newarticle of manufacture, a knockdown box section,comprisi ng a main body,integral side andend flaps and means for detachably locking them in setup position, the outer faces of. the side and end flaps only being dec0rated,'and a separately formed extension member,.of greater transverseand longitudinal diameter than the main body,

decorated on its outer face only and permanently united to said mainbody with its Undecorated face. in engagement with the undecorated'outer face of said main body.

2. As a new article of manufacture, a

knockdown box section comprising a main body, integral side and endflaps and integral means for detachably locking them in set up position,the outer faces of the side and end flaps having decorations imprinteddirectly 30, thereon, a separately formed extension blank of greatertransverse and longitudinal diameter than the main body and a decoratedcovering fabric extending over the outer face oftheextension blank andsecured to the under face thereof, said extension blank beingpermanently secured to the outer face of-said main-body coaxiallythereof. 3. As a-. new article of manufacture, a knockdown box sectioncomprising a main 40 body, integral side and end flapsv and integralmeans for detachably locking them in set up position, and a separatelyformed eX- tension-blank of greater transverse and longitudinaldimensions than the main body, said -extension' blank being permanentlysecured to the outerface of said main body to provide extensionsbeyondthe sides and ends thereof. In testimony whereof I afiix my signature.RALPH A. GROSS.

